"We'll let all those details out, but I think the good news is, this issue of this big, major conflict for the city is behind us," Emanuel said when asked at an unrelated news conference about any deal for the museum to stay at the pier.

Later, Emanuel spokeswoman Kathleen Strand said the city gave the Chicago Children's Museum no tax breaks or other financial incentives of any kind. Officials have not released the contract, however.

The new lease, which could last as long as 90 years, puts to rest a years-long controversy over where the museum would build its new facility. It has long been at Navy Pier, but former Mayor Richard Daley backed a plan to build a new museum near the north end of Grant Park.

Emanuel did not support that idea when he ran for mayor. Asked today whether the museum got any rent breaks, tax breaks or other deals to stay, the mayor talked instead about finding a way to end the dispute.

"When I ran for office, I told you we were going to find common ground, and resolve the issue of the conflict of where the Children's Museum should go," Emanuel said at an unrelated event at Field Elementary School in the Rogers Park neighborhood.

"I think the good news is I think they saw what we all saw, which is a future aligned with where they are at Navy Pier," Emanuel said.